Invalid-bed



T. 00003. INVALID BED.

APPLICATION FILED DEC,23, I919.

Patented Aug. 23,1921.

INVENTUR ATTYS THOMAS DODDS, OF THESSALON, ONTARIO, CANADA.

INVALID-BED.

Specification of Letters latent.

Patented Aug. 23, 1921.

Application filed December 23, 1919. Serial No. 346,863.

To all whom itmag concern:

Be it know that I, THOMAS Donns, a subject of the King of Great Britain, and resident of the town of Thessalon, in the Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Invalid-Beds, of which the following is a specification. I

This invention relates to improvements in invalid beds, and the objects of the invention are to permit of the lower end or bottom, or the upper or top end of the bed being elevated so that the feet of the patient may be brought into position above that of his head, or the head brought into a position above the feet with the body of the patient lying in an inclined position, and generally to adapt the bed to better perform the functions required of it. I

With the above and other objects in view, the invention consists essentially of the improved construction hereinafter described and set forth in the following specification and accompanying drawings forming part of the same.

In the drawings Figure 1 is a perspective view of the bed embodying the present invention.

Fig. 2 is a longitudinal section of the same.

Fig. 3 is an enlarged transverse section of the lower end of the bed showing the locking mechanism.

Like characters of reference refer to like parts in the several figures.

Referring to the drawings, A represents a bed comprising a'frame 10 in which the frame 11 of a spring mattress is mounted.

The posts 20 of the lower end of the bed are formed hollow and in the same, posts 21 are mounted provided with racks 22 adapted to mesh with gears 23 carried by the transversely extending rod 24 which has a squared projecting end 25 designed to be engaged by a crank lever handle so that on rotation of the rod 24 the gear 23 intermeshing with the rack 22 will feed the rods 21 outwardly and so elevate the lower end of the bed.

The rod 24 is provided intermediate of its length with a gear 26 with which the spring controlled dog 27 coacts so that when the lower end of the bed has been elevated it will be held in such position by means of the dog 27 engaging with the gear 26 and preventing any backward motion of the rod 24.

The spring dog 27 is supported from a transversely extending cross bar 40 provided on the frame 11. The dog is further formed with a projection or handle 41 by which it may be lifted manually, when it is desired to lower the end of the bed.

The posts 27 of the upper end of the bed are formed hollow and in these hollow posts, posts 28 are slidably mounted provided with racks 29 adapted to mesh with gears 30 carried by a transversely extending rod 31 which has a squared projecting end designed to be engaged by a crank lever handle so that on rotation of the rod the gear 30 intermeshing with the rack 29 will feed the rods 21 outwardly to elevate the lower end of the bed which is held in desired position by the dog 27 engaging with the gear 26. In lowering the lower end of the bed the dog 27 is disengaged from the gear 26 when the bed will lower under gravity.

It may be stated that the present invention is designed to be used especially in connection with invalid beds, described in my application, Serial No. 324,164. It will be seen that by the means of invention herein described, the feet or head of the patient may be lowered or raised as desired.

As many changes could be made in the above construction, and many apparently widely different embodiments of my invention, within the scope of the claim, constructed without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawings shall be interpreted as illustrative and not in a limiting sense.

What I claim as my invention is An invalid bed having tubular head and foot posts, racks slidably mounted in the said posts, Ushaped members carried by the tubular posts a cross bar, a transversely extending rotatable rod journaled in the U-shaped members, gears on the ends of the rod meshing with the racks, and located between the two arms of the U-shaped mem' bers, a gear intermediate of the length of the rod, a spring dog on the cross bar,

adapted to engage the last said gear, the 10 said dog having a projecting handle formed integral therewith.

In witness whereof I have hereunto set my hand in the presence of two witnesses. THOMAS DODDS.

Witnesses:

T. E. WILLIAMS, RUBY MCKENZIE. 

